US20130005088A1 - Methods of forming semiconductor modules and semiconductor modules formed by the same - Google Patents
Methods of forming semiconductor modules and semiconductor modules formed by the same Download PDFInfo
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- US20130005088A1 US20130005088A1 US13/531,983 US201213531983A US2013005088A1 US 20130005088 A1 US20130005088 A1 US 20130005088A1 US 201213531983 A US201213531983 A US 201213531983A US 2013005088 A1 US2013005088 A1 US 2013005088A1
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- H—ELECTRICITY
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- H01L21/50—Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the groups H01L21/18 - H01L21/326 or H10D48/04 - H10D48/07 e.g. sealing of a cap to a base of a container
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Definitions
- the present disclosure herein relates to methods of forming semiconductor modules and to the semiconductor modules formed by the same and, more particularly, to methods of forming semiconductor modules including flexible panels and to the semiconductor modules formed by the same.
- Exemplary embodiments of the inventive concept may provide a method of forming a semiconductor module with increased reliability and a semiconductor module formed by the same.
- Exemplary embodiments of the inventive concept may also provide a method of forming a semiconductor module capable of reducing manufacturing costs and a semiconductor module formed by the same.
- Exemplary embodiments of the inventive concept may also provide a method of forming a semiconductor module optimized for being small in size and lightweight, and a semiconductor module formed by the same.
- a method of forming a semiconductor module may include forming a high polymer material layer having an adhesive property on a support substrate, adhering a semiconductor chip to the support substrate using the high polymer material layer, bonding the semiconductor chip adhered to the support substrate to a flexible panel and removing the support substrate.
- a stress-resistance of the semiconductor chip may be no less than about 350 Mpa.
- adhering the semiconductor chip to the support substrate may include: adhering a plurality of semiconductor chips to the support substrate and cutting the support substrate and the high polymer material layer to separate the plurality of semiconductor chips from each other.
- adhering the plurality of semiconductor chips to the support substrate may include: adhering a wafer including the plurality of semiconductor chips and a scribe lane to the support substrate and dicing the scribe lane.
- removing the support substrate may include: performing an ultraviolet irradiation process and/or a thermal treatment process on the high polymer material layer.
- a hardness of the high polymer material layer may become less than a hardness of the flexible panel due to the ultraviolet irradiation process and/or thermal treatment process.
- the method may further include removing the high polymer material layer.
- the high polymer material layer and the support substrate may be removed simultaneously by the same process.
- a semiconductor module may include: a flexible panel, a high polymer material layer disposed on the flexible panel, and including a material having an adhesive property, and a semiconductor chip disposed between the flexible panel and the high polymer material layer, and bonded to the flexible panel.
- a thickness of the semiconductor chip may have a range of about 30 ⁇ m to about 50 ⁇ m.
- the high polymer material layer may protect the semiconductor chip.
- a hardness of the high polymer material layer may be changed by an ultraviolet irradiation process and/or a thermal treatment process.
- the hardness of the high polymer material layer may be less than a hardness of the flexible panel.
- a stress-resistance of the semiconductor chip may be no less than about 350 Mpa.
- the flexible panel may include a thin film transistor.
- the flexible panel may further include an organic electro luminescent device electrically connected to the thin film transistor.
- a display apparatus includes a display unit including: a flexible panel and a semiconductor chip.
- the flexible panel includes a display region and a peripheral region disposed on a periphery of the display region.
- the flexible panel is composed of one of polycarbomate, polyimide, polyethylene terephthalate, polyester, or a combination thereof.
- the semiconductor chip has a first surface mounted on the peripheral region of the flexible panel, and the semiconductor chip has a stress-resistance value of no less than about 350 mpa, a deflection value of no less than about 0.15 nm and a thickness of about 30 ⁇ m to about 50 ⁇ m.
- the display apparatus further includes a container unit configured to contain the display unit therein.
- FIG. 1 is a flowchart illustrating a method of forming a semiconductor module according to an exemplary embodiment of the inventive concept
- FIGS. 2A to 2D are cross sectional views illustrating a method of forming a semiconductor module according to an exemplary embodiment of the inventive concept
- FIG. 3A is a perspective view illustrating a semiconductor module according to an exemplary embodiment of the inventive concept
- FIG. 3B is a cross sectional view taken along a line I-I′ of FIG. 3A to illustrate a semiconductor module according to an exemplary embodiment of the inventive concept;
- FIG. 4A is a perspective view illustrating a semiconductor module according to an exemplary embodiment of the inventive concept
- FIG. 4B is a cross section view taken along a line II-II′ of FIG. 4A to illustrate a semiconductor module according to an exemplary embodiment of the inventive concept;
- FIG. 5A is a view illustrating an experiment method to measure physical characteristics of a semiconductor chip included in a semiconductor module according to an exemplary embodiment of the inventive concept
- FIG. 5B is a graph illustrating stress-resistance of semiconductor chips measured by the experimental method of FIG. 5A ;
- FIG. 5C is a graph illustrating deflection of the semiconductor chips measured by the experimental method of FIG. 5A ;
- FIG. 6 is an exploded perspective view a display apparatus including a semiconductor module according to an exemplary embodiment of inventive concept.
- FIG. 7 is a partial enlarged view illustrating the inside of a flexible panel included in the display apparatus of FIG. 6 .
- FIG. 1 is a flowchart illustrating a method of forming a semiconductor module according to an exemplary embodiment of the inventive concept
- FIGS. 2A to 2D are cross sectional views illustrating a method of forming a semiconductor module according to an exemplary embodiment of the inventive concept.
- a wafer 100 may be adhered to a support substrate 200 .
- the support substrate 200 may perform a function to support the wafer 100 .
- a stress-resistance of the support substrate 200 may be greater than a stress-resistance of the wafer 100 .
- a thickness of the support substrate 200 may be greater than that of the wafer 100 .
- the support substrate 200 may be a substrate which has a little flexibility and/or a great stress-resistance.
- the support substrate 200 may include a silicon substrate or a glass substrate.
- the wafer 100 adhered to the substrate 200 may be a wafer to which a grinding process is performed.
- a plurality of semiconductor chips 100 a may be formed in a bulk wafer, and then the grinding process may be performed to the bulk wafer, thereby forming the wafer 100 .
- a thickness of the wafer 100 may have a range of, for example, about 30 ⁇ m to about 50 ⁇ m.
- the wafer 100 may include the plurality of semiconductor chips 100 a .
- Each of the semiconductor chips 100 a may include, for example, an integrated circuit.
- the semiconductor chip 100 a may include a drive integrated circuit.
- the wafer 100 may further include a scribe lane 100 b disposed between the plurality of semiconductor chips 100 a .
- the plurality of semiconductor chips 100 a may be defined by the scribe lane 100 b.
- each of the semiconductor chips 100 a may further include, for example, a bump 120 which is electrically connected to the integrated circuit included in each of the semiconductor chips 100 a .
- the bump 120 may be provided in a plural number to each of the semiconductor chips 100 a .
- the bumps 120 may be, for example, two-dimensionally arranged along rows and columns.
- the bump 120 may include, for example, metal.
- the bump 120 may include copper, nickel, and/or gold.
- Adhering the wafer 100 to the support substrate 200 may include, for example, forming a high polymer material layer 210 on the support substrate 200 (S 10 ), and adhering the wafer 100 to the support substrate 200 using the high polymer material layer 210 (S 20 ).
- the high polymer material layer 210 may include a material having an adhesive property.
- the high polymer material layer 210 may include one of an epoxy adhesive, an acrylic adhesive, a polyimide adhesive, silicon adhesive or combination thereof.
- the high polymer material layer 210 may be, for example, hardened to adhere the wafer 100 to the support substrate 200 .
- the high polymer material layer 210 may be hardened by a thermal treatment process, an ultraviolet irradiation process, and/or a microwave treatment process.
- a physical force may be applied to the wafer 100 and/or the support substrate 200 to adhere the wafer 100 to the support substrate 200 .
- the plurality of semiconductor chips 100 a in the wafer 100 may be separated from each other by performing, for example, a dicing process on the wafer 100 .
- the dicing process may, for example, cut the scribe lane 100 b , so that the plurality of semiconductor chips 100 a may be separated from each other and be adhered to the support substrate 200 .
- the separated semiconductor chips 100 a may be adhered to the support substrate 200 . That is, the high polymer material layer 210 may be formed on the support substrate 200 , and the separated semiconductor chips 100 a may be adhered to the support substrate 200 using the high polymer material layer 210 .
- the plurality of semiconductor chips 110 a which are separated from each other and adhered to the support substrate 200 , may have different integrated circuits from each other.
- the high polymer material layer 210 and the support substrate 200 may be cut (S 30 ).
- the high polymer material layer 210 and the support substrate 200 may be cut to form, for example, high polymer material patterns 210 a and support patterns 200 a .
- the high polymer material patterns 210 a and the support patterns 200 may be separated from each other by the cutting process (S 30 ), so that the plurality of semiconductor chips 100 a adhered to the support substrate 200 may be separated from each other. That is, each of the high polymer material patterns 210 a and each of the support patterns 200 a may perform a function to support each of the semiconductor chips 100 a.
- the dicing process to the wafer 100 described with reference to FIG. 2B may be performed, for example, simultaneously with the cutting process of the high polymer material layer 210 and the support substrate 200 described with reference to FIG. 2C . That is, the high polymer material layer 210 and the support substrate 200 as well as the wafer 100 may be cut simultaneously along the scribe lane 100 b of the wafer 100 .
- a single semiconductor chip 100 a supported by the high polymer material pattern 210 a and the support pattern 200 a may be bonded to a flexible panel 10 (S 40 ).
- the flexible panel 10 may have, for example, better flexibility than a silicon substrate or a glass substrate having the same thickness as the flexible panel 10 .
- the flexible panel 10 may be, for example, a plastic substrate.
- the flexible panel 10 may include one of polycarbomate (PC), polyimide (PI), polyethylene terephthalate (PET), polyester (PES), or a combination thereof.
- the single semiconductor chip 100 a bonded to the flexible panel 10 may have a stress-resistance value of, for example, no less than about 350 Mpa (megapascal). Also, the single semiconductor chip 100 a bonded to the flexible panel 10 may have a deflection value of, for example, no less than about 0.15 mm. A thickness of the single semiconductor chip 100 a may have a range of, for example, about 30 ⁇ m to about 50 ⁇ m.
- the high polymer material pattern 210 a and the support pattern 200 a may support the semiconductor chip 100 a , damage to the semiconductor chip 100 a may be minimized during the bonding process of the semiconductor chip 100 a to the flexible panel 10 .
- the flexible panel 10 may include an electronic circuit.
- the electronic circuit of the flexible panel 10 may be electrically connected to the integrated circuit of the semiconductor chip 100 a through the bump 120 by the bonding process.
- the support pattern 200 a may be removed from the semiconductor chip 100 a (S 50 ).
- the process of removing the support pattern 200 a (S 50 ) may include, for example, a process of softening the high polymer material pattern 210 a .
- a process of softening the high polymer material pattern 210 a For example, an ultraviolet irradiation process and/or a thermal treatment process may be performed on the high polymer material pattern 210 a to soften the high polymer material pattern 210 a .
- an adhesive force of the high polymer material pattern 210 a may become weak thereby facilitating the removal of the support pattern 200 a.
- the high polymer material pattern 210 a may also be removed. After the support pattern 200 a is removed, a cleaning process may be performed to remove the high polymer material pattern 210 a . Alternatively, the support pattern 200 a and the high polymer material pattern 210 a may be removed simultaneously.
- the high polymer material pattern 210 a may remain on the semiconductor chip 100 a while the support pattern 200 a is removed.
- the high polymer material pattern 210 a may protect the semiconductor chip 100 a to minimize damage to the semiconductor chip 100 a which may be caused by an external force and/or permeation of an external material.
- the semiconductor chip 100 a may be adhered to the support substrate 200 using the high polymer material layer 210 , and then the semiconductor chip 100 adhered to the support substrate 200 may be bonded to the flexible panel 10 .
- damage to the semiconductor chip 100 a which may be caused by bonding the semiconductor chip 100 a to the flexible panel 10 may be minimized.
- a semiconductor module with increased reliability may be realized.
- the semiconductor chip 100 a may be, for example, bonded directly to the flexible panel 10 . That is, another structure for connection of the semiconductor chip 100 a and the flexible panel 10 may be omitted.
- a semiconductor module optimized for being small in size and/or lightweight may be realized, and/or a semiconductor module may be formed with low manufacturing costs.
- FIG. 3A is a perspective view illustrating a semiconductor module according to an exemplary embodiment of the inventive concept
- FIG. 3B is a cross sectional view taken along a line I-I′ of FIG. 3A
- FIG. 4A is a perspective view illustrating a semiconductor module according to an exemplary embodiment of the inventive concept
- FIG. 4B is a cross section view taken along a line II-IF of FIG. 4A .
- a semiconductor module may include a flexible panel 10 .
- the flexible panel 10 may have, for example, better flexibility than a silicon substrate or a glass substrate having the same thickness as the flexible panel 10 .
- the flexible panel 10 may be, for example, a plastic substrate.
- the flexible panel 10 may include one of polycarbonate (PC), polyimide (PI), polyethylene terephthalate (PET), polyester (PES), or a combination thereof.
- the flexible panel 10 may include, for example, an electronic circuit.
- the semiconductor module may further include a semiconductor chip 100 a bonded to the flexible panel 10 .
- the semiconductor chip 100 a may include, for example, an integrated circuit.
- the semiconductor chip 100 a may include a drive integrated circuit.
- the integrated circuit in the semiconductor chip 110 a may be electrically connected to the electronic circuit in the flexible panel 10 .
- the semiconductor chip 100 a may have, for example, better flexibility than that of a silicon substrate being three times thicker than the semiconductor chip 100 a .
- a predetermined stress may be applied to the semiconductor chip 100 a depending on the deflection of the flexible panel 10 .
- the degree of stress-resistance which the semiconductor chip 100 a can withstand without breaking may be greater than that of the stress-resistance which the silicon substrate being three times thicker than semiconductor chip 100 a can withstand.
- a stress-resistance value of the semiconductor chip 100 a may be, for example, no less than about 350 Mpa.
- the deflection value of the semiconductor chip 100 a may be, for example, no less than about 0.15 mm.
- the thickness of the semiconductor chip 100 a may have a range of about 30 ⁇ m to about 50 ⁇ m.
- the semiconductor chip 100 a may further include, for example, a bump 120 which is electrically connected to the integrated circuit in the semiconductor chip 100 .
- the integrated circuit of the semiconductor chip 100 a may be electrically connected to the electronic circuit of the flexible panel 10 through the bump 120 .
- the bump 120 may be provided in a plural number in the semiconductor chip 100 a .
- the bumps 120 may be, for example, two-dimensionally arranged along rows and columns.
- the bump 120 may include, for example, metal.
- the bump 120 may include copper, nickel, and/or gold.
- the semiconductor chip 100 a may be, for example, bonded directly to the flexible panel 10 . That is, another structure for connection of the semiconductor chip 100 a and the flexible panel 10 may be omitted.
- a semiconductor module optimized for being small in size and/or lightweight may be realized, and/or a semiconductor module may be formed with low manufacturing costs.
- the semiconductor module may further include, for example, a high polymer material pattern 210 a disposed on the semiconductor chip 100 a .
- the high polymer material pattern 210 a may include, for example, a material having an adhesive property.
- the high polymer material pattern 210 a may include one of an epoxy adhesive, an acrylic adhesive, a polyimide adhesive, silicon adhesive or a combination thereof.
- a hardness of the high polymer material pattern 210 a may be changed by an ultraviolet irradiation process and/or a thermal treatment process.
- the hardness of the high polymer material pattern 210 a may become less.
- the hardness of the high polymer material pattern 210 a may be, for example, less than that of the flexible panel 10 .
- the high polymer material pattern 210 a may protect the semiconductor chip 100 a to minimize damage to the semiconductor chip 100 a which may be caused by an external force and/or permeation of an external material.
- the high polymer material pattern 210 a may be disposed on the semiconductor chip 100 a , damage to the semiconductor chip 100 a which may be caused by an external force and/or permeation of an external material may be minimized. Thus, a semiconductor module with increased reliability may be realized.
- FIG. 5A is a view illustrating an experiment method to measure physical characteristics of a semiconductor chip included in a semiconductor module according to an exemplary embodiment of the inventive concept.
- FIG. 5B is a graph illustrating stress-resistance of semiconductor chips measured by the experimental method of FIG. 5A
- FIG. 5C is a graph illustrating deflection of the semiconductor chips measured by the experimental method of FIG. 5A .
- a semiconductor chip 2000 is placed on a pair of supporting portions 2100 .
- the pair of supporting portions 2100 may be spaced apart from each other in one direction by a distance W 1 .
- a load 2200 may be mounted over the semiconductor chip 2000 being placed on the pair of supporting portions 2100 .
- the deflection W 2 of the semiconductor chip 2000 is a maximum distance between one surface of the semiconductor chip 2000 not being applied with the predetermined pressure and the one surface of the bent semiconductor chip 200 being applied with the predetermined pressured.
- the load 2200 may include a surface having a predetermined radius of curvature. The surface having the predetermined radius of curvature is in contact with the semiconductor chip 2000 .
- the semiconductor chips used in experimental examples 1 to 4 and comparative examples 1 and 2 had the same widths as each other and had different thicknesses from each other.
- the thicknesses of the semiconductor chips used in the experimental examples 1 to 4 and the comparative examples 1 and 2 are shown in the following table 1.
- the semiconductor chips used in the experimental examples 1 to 4 were the semiconductor chips used in the semiconductor modules according to an exemplary embodiment of the inventive concept.
- the experimental examples 1 to 4 show the physical characteristics of the semiconductor chips used in the semiconductor modules according to an exemplary embodiment of the inventive concept.
- the stress-resistance of the semiconductor chips of the experimental examples 1 to 4 and the comparative examples 1 and 2 were tested.
- the distance W 1 between the pair of supporting portions 2100 was about 10 mm.
- the load 2200 including the surface having a radius of curvature of no greater than about 3 mm was used in the present experiment.
- a pressure with a speed of about 1 mm/minute was applied to the semiconductor chips using the load.
- F is the force (N) at break of the semiconductor chip
- W 1 is the distance (about 10 mm) between the pair of supporting portions 2100
- L is the width (mm) of the semiconductor chip
- d is the thickness (mm) of the semiconductor chip.
- the semiconductor chips of the experimental examples 1 to 4 have stress-resistance values greater than about 350 Mpa.
- the semiconductor chips of the comparative examples 1 and 2 have stress-resistance values less than about 350 Mpa.
- a predetermined stress may be applied to the bonded semiconductor chip by bending phenomenon of the flexible panel.
- the semiconductor chip may be broken due to the stress applied by the bending phenomenon of the flexible panel.
- the semiconductor chip bonded directly to the flexible panel has a stress-resistance value of no less than about 350 Mpa.
- the semiconductor chip 100 a in the semiconductor module according to an embodiment of the inventive concept may have a stress-resistance value of no less than about 350 Mpa.
- the semiconductor chip 100 a in the semiconductor module according to an embodiment of the inventive concept may have a stress-resistance value of no less than about 550 Mpa.
- deflection values of the semiconductor chips of the experimental examples 1 to 4 and the comparative examples 1 and 2 were measured just before the semiconductor chips are broken. The measured deflection values were illustrated in FIG. 5C .
- the deflection values W 2 of the semiconductor chips of the experimental examples 1 to 4 are greater than about 0.15 mm.
- the deflection values W 2 of the semiconductor chips of the comparative examples 1 and 2 are less than about 0.15 mm.
- the bonded semiconductor chip when the semiconductor chip is bonded directly to the flexible panel, the bonded semiconductor chip can be bent by the bending phenomenon of the flexible panel. In this case, if the deflection value of the bonded semiconductor chip is small, the semiconductor chip may be broken by the bending phenomenon of the flexible panel.
- the deflection value W 2 of the semiconductor chip 100 in the semiconductor module according to an embodiment of the inventive concept may be no less than about 0.15 mm.
- the deflection value W 2 of the semiconductor chip 100 in the semiconductor module according to an embodiment of the inventive concept may be no less than about 0.4 mm.
- FIG. 6 is an exploded perspective view of a display apparatus 1000 including a semiconductor module according to an exemplary embodiment of inventive concept
- FIG. 7 is a partial enlarged cross sectional view illustrating the inside of a flexible panel included in the display apparatus 1000 of FIG. 6 .
- the display apparatus 1000 may include, for example, a display unit 300 and a container unit 500 .
- the display unit 300 may be, for example, one of the semiconductor modules according to an exemplary embodiment of the inventive concept.
- the display unit 300 may include, for example, the flexible panel 10 and the semiconductor chip 100 a .
- the flexible panel 10 may include, for example, a display region and a peripheral region.
- the display region may display an image corresponding to an inputted electrical signal, and the peripheral region may be disposed on a periphery of the display region.
- the display region of the flexible panel 10 may include, for example, a plurality of pixels arranged in a matrix shape. As illustrated in FIG. 7 , each of the pixels may include, for example, an organic electro luminescent device L, a thin film transistor T, and a storage capacitor C 1 .
- the thin film transistor T may include, for example, a gate electrode 13 , a source electrode 14 , and a drain electrode 15 .
- the organic electro luminescent device L may include, for example, an anode electrode 16 , an organic light emitting layer 17 , and a cathode electrode 18 .
- the anode electrode 16 of the organic electro luminescent device L may be connected to the drain electrode 15 of the thin film transistor T.
- the storage capacitor C 1 may be connected to the thin film transistor T to provide an output current in proportion to the square of a difference between a stored voltage in the storage capacitor C 1 and a threshold voltage to the organic electro luminescent device L.
- the organic electro luminescent device L may emit light by the output current.
- the semiconductor chip 100 a may be mounted on the peripheral region of the flexible panel 10 .
- the semiconductor chip 100 a may provide a drive signal to the pixels in the display region of the flexible panel 10 .
- the semiconductor chip 100 a may have, for example, better flexibility than that of a silicon substrate being three times thicker than the semiconductor chip 100 a .
- the stress-resistance value of the semiconductor chip 100 a may be, for example, no less than about 350 Mpa.
- the deflection value of the semiconductor chip 100 a may be, for example, no less than about 1.5 mm.
- a thickness of the semiconductor chip 100 a may have a range of, for example, about 30 ⁇ m to about 50 ⁇ m.
- the display unit 300 may further include, for example, a high polymer material pattern 210 a disposed on the semiconductor chip 100 a .
- the high polymer material pattern 210 a may protect the semiconductor chip 100 a to minimize damage to the semiconductor chip 100 a which may be caused by an external force and/or permeation of an external material.
- the container unit 500 of the display apparatus 1000 may include, for example, a top chassis 510 , a mold frame 520 , and a bottom chassis 530 .
- the mold frame 520 may contain the display unit 300 within the first containing space S 1 of the mold frame 520 .
- the mold frame 520 may include, for example, a bottom surface, and a side surface being extended from an edge of the bottom surface for formation of the first containing space S 1 .
- the mold frame 520 may be made of, for example, a synthetic resin material.
- the mold frame 520 may be contained in the second containing space S 2 of the bottom chassis 530 .
- the bottom chassis 530 is made of, for example, a metal material.
- the bottom chassis 530 may include, for example, a bottom plate, and a side plate being extended from an edge of the bottom plate for formation of the second containing space S 2 .
- the top chassis 510 may fix the mold frame 520 and the display unit 300 housed within the first containing space S 1 of the mold frame 520 within the second containing space S 2 of the bottom chassis 530 .
- the semiconductor chip 100 a may be, for example, directly mounted on the peripheral region of the flexible panel 10 in the display unit 300 of the display apparatus 1000 described above. Thus, another structure for connection of the semiconductor chip 100 a and the flexible panel 10 may be omitted. As a result, a semiconductor module optimized for being small in size and/or lightweight may be realized. Also, damage to the semiconductor chip 100 a which may be caused by an external force and/or permeation of an external material may be minimized due to the high polymer material pattern 210 a . Thus, a display apparatus 1000 with increased reliability may be realized.
- the semiconductor chip may be adhered to the support substrate, and then the adhered semiconductor chip may be bonded to the flexible panel.
- the semiconductor chip may be bonded to the flexible panel in a state in which damage to the semiconductor chip can be minimized.
- a semiconductor chip with increased reliability may be realized.
- the semiconductor chip may be bonded directly to the flexible panel.
- a semiconductor module optimized for being small in size and/or lightweight may be realized, and/or a semiconductor module may be formed with low manufacturing costs.
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Abstract
Description
- This U.S. patent application claims priority under 35 U.S.C. §119 to Korean Patent Application No. 10-2011-0064612, filed on Jun. 30, 2011, the disclosure of which is hereby incorporated by reference herein in its entirety.
- The present disclosure herein relates to methods of forming semiconductor modules and to the semiconductor modules formed by the same and, more particularly, to methods of forming semiconductor modules including flexible panels and to the semiconductor modules formed by the same.
- Recently, requirements for products which are lightweight, small in size, and which have low manufacturing costs have been increased in electronic products such as, for example, mobile phones and notebook computers. For instance, semiconductor modules used in electronic products and which are small in size, lightweight and which have low manufacturing costs may be required to satisfy the requirements of the electronic products.
- Recently, various research has been conducted to realize semiconductor modules which are small in size, lightweight, and which have low manufacturing costs.
- Exemplary embodiments of the inventive concept may provide a method of forming a semiconductor module with increased reliability and a semiconductor module formed by the same.
- Exemplary embodiments of the inventive concept may also provide a method of forming a semiconductor module capable of reducing manufacturing costs and a semiconductor module formed by the same.
- Exemplary embodiments of the inventive concept may also provide a method of forming a semiconductor module optimized for being small in size and lightweight, and a semiconductor module formed by the same.
- According to exemplary embodiments of the inventive concept, a method of forming a semiconductor module may include forming a high polymer material layer having an adhesive property on a support substrate, adhering a semiconductor chip to the support substrate using the high polymer material layer, bonding the semiconductor chip adhered to the support substrate to a flexible panel and removing the support substrate.
- In an embodiment, a stress-resistance of the semiconductor chip may be no less than about 350 Mpa.
- In an embodiment, adhering the semiconductor chip to the support substrate may include: adhering a plurality of semiconductor chips to the support substrate and cutting the support substrate and the high polymer material layer to separate the plurality of semiconductor chips from each other.
- In an embodiment, adhering the plurality of semiconductor chips to the support substrate may include: adhering a wafer including the plurality of semiconductor chips and a scribe lane to the support substrate and dicing the scribe lane.
- In an embodiment, removing the support substrate may include: performing an ultraviolet irradiation process and/or a thermal treatment process on the high polymer material layer.
- In an embodiment, a hardness of the high polymer material layer may become less than a hardness of the flexible panel due to the ultraviolet irradiation process and/or thermal treatment process.
- In an embodiment, the method may further include removing the high polymer material layer.
- In an embodiment, the high polymer material layer and the support substrate may be removed simultaneously by the same process.
- According to an exemplary embodiment of the inventive concepts, a semiconductor module may include: a flexible panel, a high polymer material layer disposed on the flexible panel, and including a material having an adhesive property, and a semiconductor chip disposed between the flexible panel and the high polymer material layer, and bonded to the flexible panel.
- In an embodiment, a thickness of the semiconductor chip may have a range of about 30 μm to about 50 μm.
- In an embodiment, the high polymer material layer may protect the semiconductor chip.
- In an embodiment, a hardness of the high polymer material layer may be changed by an ultraviolet irradiation process and/or a thermal treatment process.
- In an embodiment, the hardness of the high polymer material layer may be less than a hardness of the flexible panel.
- In an embodiments, a stress-resistance of the semiconductor chip may be no less than about 350 Mpa.
- In an embodiment, the flexible panel may include a thin film transistor.
- In an embodiment, the flexible panel may further include an organic electro luminescent device electrically connected to the thin film transistor.
- According to an exemplary embodiment of the inventive concept, a display apparatus is provided. The display apparatus includes a display unit including: a flexible panel and a semiconductor chip. The flexible panel includes a display region and a peripheral region disposed on a periphery of the display region. The flexible panel is composed of one of polycarbomate, polyimide, polyethylene terephthalate, polyester, or a combination thereof. The semiconductor chip has a first surface mounted on the peripheral region of the flexible panel, and the semiconductor chip has a stress-resistance value of no less than about 350 mpa, a deflection value of no less than about 0.15 nm and a thickness of about 30 μm to about 50 μm. In addition, the display apparatus further includes a container unit configured to contain the display unit therein.
- Exemplary embodiments of the inventive concept can be understood in more detail in view of the attached drawings and accompanying detailed description.
-
FIG. 1 is a flowchart illustrating a method of forming a semiconductor module according to an exemplary embodiment of the inventive concept; -
FIGS. 2A to 2D are cross sectional views illustrating a method of forming a semiconductor module according to an exemplary embodiment of the inventive concept; -
FIG. 3A is a perspective view illustrating a semiconductor module according to an exemplary embodiment of the inventive concept; -
FIG. 3B is a cross sectional view taken along a line I-I′ ofFIG. 3A to illustrate a semiconductor module according to an exemplary embodiment of the inventive concept; -
FIG. 4A is a perspective view illustrating a semiconductor module according to an exemplary embodiment of the inventive concept; -
FIG. 4B is a cross section view taken along a line II-II′ ofFIG. 4A to illustrate a semiconductor module according to an exemplary embodiment of the inventive concept; -
FIG. 5A is a view illustrating an experiment method to measure physical characteristics of a semiconductor chip included in a semiconductor module according to an exemplary embodiment of the inventive concept; -
FIG. 5B is a graph illustrating stress-resistance of semiconductor chips measured by the experimental method ofFIG. 5A ; -
FIG. 5C is a graph illustrating deflection of the semiconductor chips measured by the experimental method ofFIG. 5A ; -
FIG. 6 is an exploded perspective view a display apparatus including a semiconductor module according to an exemplary embodiment of inventive concept; and -
FIG. 7 is a partial enlarged view illustrating the inside of a flexible panel included in the display apparatus ofFIG. 6 . - Exemplary embodiments of the inventive concept will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the inventive concept are shown. Exemplary embodiments of the inventive concept can be understood in more detail from the following detailed description taken in conjunction with the accompanying drawings. It should be noted, however, that exemplary embodiments of the inventive concept are not limited to the following exemplary embodiments, and may be implemented in various forms. In the drawings, exemplary embodiments of the inventive concept are not limited to the specific examples provided herein and are exaggerated for clarity.
- The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used herein, the singular terms “a,” “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items. It will be understood that when an element is referred to as being “connected” or “coupled” to another element, it may be directly connected or coupled to the other element or intervening elements may be present.
- Similarly, it will be understood that when an element such as a layer, region or substrate is referred to as being “on” another element, it can be directly on the other element or intervening elements may be present.
- A method of forming a semiconductor module according to an exemplary embodiment of the inventive concept will be described with reference to
FIGS. 1 and 2A to 2D, hereinafter.FIG. 1 is a flowchart illustrating a method of forming a semiconductor module according to an exemplary embodiment of the inventive concept, andFIGS. 2A to 2D are cross sectional views illustrating a method of forming a semiconductor module according to an exemplary embodiment of the inventive concept. - Referring to
FIGS. 1 and 2A , awafer 100 may be adhered to asupport substrate 200. Thesupport substrate 200 may perform a function to support thewafer 100. As thesupport substrate 200 performs the function to support thewafer 100, a stress-resistance of thesupport substrate 200 may be greater than a stress-resistance of thewafer 100. - For example, a thickness of the
support substrate 200 may be greater than that of thewafer 100. Or thesupport substrate 200 may be a substrate which has a little flexibility and/or a great stress-resistance. For example, thesupport substrate 200 may include a silicon substrate or a glass substrate. - According to an embodiment, the
wafer 100 adhered to thesubstrate 200 may be a wafer to which a grinding process is performed. A plurality ofsemiconductor chips 100 a may be formed in a bulk wafer, and then the grinding process may be performed to the bulk wafer, thereby forming thewafer 100. In an embodiment, a thickness of thewafer 100 may have a range of, for example, about 30 μm to about 50 μm. - The
wafer 100 may include the plurality ofsemiconductor chips 100 a. Each of thesemiconductor chips 100 a may include, for example, an integrated circuit. For example, thesemiconductor chip 100 a may include a drive integrated circuit. Thewafer 100 may further include ascribe lane 100 b disposed between the plurality ofsemiconductor chips 100 a. The plurality ofsemiconductor chips 100 a may be defined by thescribe lane 100 b. - In an embodiment, each of the
semiconductor chips 100 a may further include, for example, abump 120 which is electrically connected to the integrated circuit included in each of thesemiconductor chips 100 a. In an embodiment, thebump 120 may be provided in a plural number to each of thesemiconductor chips 100 a. Although not shown, when thebump 120 is provided in a plural number to each of thesemiconductor chip 100 a, thebumps 120 may be, for example, two-dimensionally arranged along rows and columns. Thebump 120 may include, for example, metal. For example, thebump 120 may include copper, nickel, and/or gold. - Adhering the
wafer 100 to thesupport substrate 200 may include, for example, forming a highpolymer material layer 210 on the support substrate 200 (S10), and adhering thewafer 100 to thesupport substrate 200 using the high polymer material layer 210 (S20). The highpolymer material layer 210 may include a material having an adhesive property. For example, the highpolymer material layer 210 may include one of an epoxy adhesive, an acrylic adhesive, a polyimide adhesive, silicon adhesive or combination thereof. In an embodiment, after the highpolymer material layer 210 is applied to thesupport substrate 200 and then thewafer 100 is provided on the highpolymer material layer 210, the highpolymer material layer 210 may be, for example, hardened to adhere thewafer 100 to thesupport substrate 200. For example, the highpolymer material layer 210 may be hardened by a thermal treatment process, an ultraviolet irradiation process, and/or a microwave treatment process. Alternatively, for example, a physical force may be applied to thewafer 100 and/or thesupport substrate 200 to adhere thewafer 100 to thesupport substrate 200. - Referring to
FIG. 2B , the plurality ofsemiconductor chips 100 a in thewafer 100 may be separated from each other by performing, for example, a dicing process on thewafer 100. The dicing process may, for example, cut thescribe lane 100 b, so that the plurality ofsemiconductor chips 100 a may be separated from each other and be adhered to thesupport substrate 200. - Alternatively, for example, contrary to the method described with reference to
FIGS. 2A and 2B , after thewafer 100 is diced to separate the plurality ofsemiconductor chips 100 a, the separatedsemiconductor chips 100 a may be adhered to thesupport substrate 200. That is, the highpolymer material layer 210 may be formed on thesupport substrate 200, and the separatedsemiconductor chips 100 a may be adhered to thesupport substrate 200 using the highpolymer material layer 210. In an embodiment, the plurality of semiconductor chips 110 a, which are separated from each other and adhered to thesupport substrate 200, may have different integrated circuits from each other. - Referring to
FIGS. 1 and 2C , the highpolymer material layer 210 and thesupport substrate 200 may be cut (S30). The highpolymer material layer 210 and thesupport substrate 200 may be cut to form, for example, highpolymer material patterns 210 a andsupport patterns 200 a. The highpolymer material patterns 210 a and thesupport patterns 200 may be separated from each other by the cutting process (S30), so that the plurality ofsemiconductor chips 100 a adhered to thesupport substrate 200 may be separated from each other. That is, each of the highpolymer material patterns 210 a and each of thesupport patterns 200 a may perform a function to support each of thesemiconductor chips 100 a. - In an embodiment, the dicing process to the
wafer 100 described with reference toFIG. 2B may be performed, for example, simultaneously with the cutting process of the highpolymer material layer 210 and thesupport substrate 200 described with reference toFIG. 2C . That is, the highpolymer material layer 210 and thesupport substrate 200 as well as thewafer 100 may be cut simultaneously along thescribe lane 100 b of thewafer 100. - Referring to
FIGS. 1 and 2D , asingle semiconductor chip 100 a supported by the highpolymer material pattern 210 a and thesupport pattern 200 a may be bonded to a flexible panel 10 (S40). Theflexible panel 10 may have, for example, better flexibility than a silicon substrate or a glass substrate having the same thickness as theflexible panel 10. According to an embodiment, theflexible panel 10 may be, for example, a plastic substrate. For example, theflexible panel 10 may include one of polycarbomate (PC), polyimide (PI), polyethylene terephthalate (PET), polyester (PES), or a combination thereof. - In an embodiment, the
single semiconductor chip 100 a bonded to theflexible panel 10 may have a stress-resistance value of, for example, no less than about 350 Mpa (megapascal). Also, thesingle semiconductor chip 100 a bonded to theflexible panel 10 may have a deflection value of, for example, no less than about 0.15 mm. A thickness of thesingle semiconductor chip 100 a may have a range of, for example, about 30 μm to about 50 μm. - As the high
polymer material pattern 210 a and thesupport pattern 200 a may support thesemiconductor chip 100 a, damage to thesemiconductor chip 100 a may be minimized during the bonding process of thesemiconductor chip 100 a to theflexible panel 10. - Although not shown, the
flexible panel 10 may include an electronic circuit. In this case, the electronic circuit of theflexible panel 10 may be electrically connected to the integrated circuit of thesemiconductor chip 100 a through thebump 120 by the bonding process. - Referring to
FIG. 1 , thesupport pattern 200 a may be removed from thesemiconductor chip 100 a (S50). In an embodiment, the process of removing thesupport pattern 200 a (S50) may include, for example, a process of softening the highpolymer material pattern 210 a. For example, an ultraviolet irradiation process and/or a thermal treatment process may be performed on the highpolymer material pattern 210 a to soften the highpolymer material pattern 210 a. When the highpolymer material pattern 210 a is softened, an adhesive force of the highpolymer material pattern 210 a may become weak thereby facilitating the removal of thesupport pattern 200 a. - In an embodiment, as illustrated in
FIGS. 3A and 3B , the highpolymer material pattern 210 a may also be removed. After thesupport pattern 200 a is removed, a cleaning process may be performed to remove the highpolymer material pattern 210 a. Alternatively, thesupport pattern 200 a and the highpolymer material pattern 210 a may be removed simultaneously. - In an embodiment, as illustrated in
FIGS. 4A and 4B , the highpolymer material pattern 210 a may remain on thesemiconductor chip 100 a while thesupport pattern 200 a is removed. When the highpolymer material pattern 210 a remains on thesemiconductor chip 100 a, the highpolymer material pattern 210 a may protect thesemiconductor chip 100 a to minimize damage to thesemiconductor chip 100 a which may be caused by an external force and/or permeation of an external material. - According to an embodiment of the inventive concept, the
semiconductor chip 100 a may be adhered to thesupport substrate 200 using the highpolymer material layer 210, and then thesemiconductor chip 100 adhered to thesupport substrate 200 may be bonded to theflexible panel 10. Thus, damage to thesemiconductor chip 100 a which may be caused by bonding thesemiconductor chip 100 a to theflexible panel 10 may be minimized. As a result, a semiconductor module with increased reliability may be realized. - Also, according to an embodiment, the
semiconductor chip 100 a may be, for example, bonded directly to theflexible panel 10. That is, another structure for connection of thesemiconductor chip 100 a and theflexible panel 10 may be omitted. Thus, a semiconductor module optimized for being small in size and/or lightweight may be realized, and/or a semiconductor module may be formed with low manufacturing costs. - Semiconductor modules according to an embodiment of the inventive concept will described with reference to
FIGS. 3A , 3B, 4A and 4B, hereinafter.FIG. 3A is a perspective view illustrating a semiconductor module according to an exemplary embodiment of the inventive concept, andFIG. 3B is a cross sectional view taken along a line I-I′ ofFIG. 3A .FIG. 4A is a perspective view illustrating a semiconductor module according to an exemplary embodiment of the inventive concept, andFIG. 4B is a cross section view taken along a line II-IF ofFIG. 4A . - Referring to
FIGS. 3A and 3B , a semiconductor module according to an exemplary embodiment of the inventive concept may include aflexible panel 10. Theflexible panel 10 may have, for example, better flexibility than a silicon substrate or a glass substrate having the same thickness as theflexible panel 10. According to an embodiment, theflexible panel 10 may be, for example, a plastic substrate. For example, theflexible panel 10 may include one of polycarbonate (PC), polyimide (PI), polyethylene terephthalate (PET), polyester (PES), or a combination thereof. - Although not shown, the
flexible panel 10 may include, for example, an electronic circuit. - The semiconductor module may further include a
semiconductor chip 100 a bonded to theflexible panel 10. Thesemiconductor chip 100 a may include, for example, an integrated circuit. For example, thesemiconductor chip 100 a may include a drive integrated circuit. In an embodiment, the integrated circuit in the semiconductor chip 110 a may be electrically connected to the electronic circuit in theflexible panel 10. - In an embodiment, the
semiconductor chip 100 a may have, for example, better flexibility than that of a silicon substrate being three times thicker than thesemiconductor chip 100 a. In more detail, when theflexible panel 10 is bent by an external force, a predetermined stress may be applied to thesemiconductor chip 100 a depending on the deflection of theflexible panel 10. For example, the degree of stress-resistance which thesemiconductor chip 100 a can withstand without breaking may be greater than that of the stress-resistance which the silicon substrate being three times thicker thansemiconductor chip 100 a can withstand. - In an embodiment, a stress-resistance value of the
semiconductor chip 100 a may be, for example, no less than about 350 Mpa. Also, the deflection value of thesemiconductor chip 100 a may be, for example, no less than about 0.15 mm. For example, the thickness of thesemiconductor chip 100 a may have a range of about 30 μm to about 50 μm. - According to an embodiment, the
semiconductor chip 100 a may further include, for example, abump 120 which is electrically connected to the integrated circuit in thesemiconductor chip 100. The integrated circuit of thesemiconductor chip 100 a may be electrically connected to the electronic circuit of theflexible panel 10 through thebump 120. In an embodiment, thebump 120 may be provided in a plural number in thesemiconductor chip 100 a. In this case, thebumps 120 may be, for example, two-dimensionally arranged along rows and columns. Thebump 120 may include, for example, metal. For example, thebump 120 may include copper, nickel, and/or gold. - According to an embodiment of the inventive concept, the
semiconductor chip 100 a may be, for example, bonded directly to theflexible panel 10. That is, another structure for connection of thesemiconductor chip 100 a and theflexible panel 10 may be omitted. Thus, a semiconductor module optimized for being small in size and/or lightweight may be realized, and/or a semiconductor module may be formed with low manufacturing costs. - As illustrated in
FIGS. 4A and 4B , the semiconductor module according to an exemplary embodiment of the inventive concept may further include, for example, a highpolymer material pattern 210 a disposed on thesemiconductor chip 100 a. The highpolymer material pattern 210 a may include, for example, a material having an adhesive property. For example, the highpolymer material pattern 210 a may include one of an epoxy adhesive, an acrylic adhesive, a polyimide adhesive, silicon adhesive or a combination thereof. In an embodiment, a hardness of the highpolymer material pattern 210 a may be changed by an ultraviolet irradiation process and/or a thermal treatment process. For example, when the ultraviolet irradiation process and/or the thermal treatment process is performed on the highpolymer material pattern 210 a, the hardness of the highpolymer material pattern 210 a may become less. In an embodiment, the hardness of the highpolymer material pattern 210 a may be, for example, less than that of theflexible panel 10. - The high
polymer material pattern 210 a may protect thesemiconductor chip 100 a to minimize damage to thesemiconductor chip 100 a which may be caused by an external force and/or permeation of an external material. - In the present embodiment, because the high
polymer material pattern 210 a may be disposed on thesemiconductor chip 100 a, damage to thesemiconductor chip 100 a which may be caused by an external force and/or permeation of an external material may be minimized. Thus, a semiconductor module with increased reliability may be realized. - An experiment to measure physical characteristics of the
semiconductor chip 100 a according to an exemplary embodiment of the inventive concept is performed using a method illustrated inFIG. 5A . Hereinafter, the physical characteristics of thesemiconductor chip 100 a will be described with reference toFIGS. 5A to 5C in more detail.FIG. 5A is a view illustrating an experiment method to measure physical characteristics of a semiconductor chip included in a semiconductor module according to an exemplary embodiment of the inventive concept.FIG. 5B is a graph illustrating stress-resistance of semiconductor chips measured by the experimental method ofFIG. 5A , andFIG. 5C is a graph illustrating deflection of the semiconductor chips measured by the experimental method ofFIG. 5A . - Referring to
FIG. 5A , asemiconductor chip 2000 is placed on a pair of supportingportions 2100. The pair of supportingportions 2100 may be spaced apart from each other in one direction by a distance W1. A load 2200 may be mounted over thesemiconductor chip 2000 being placed on the pair of supportingportions 2100. When a predetermined pressure is applied to thesemiconductor chip 2000 being placed on the pair of supportingportions 2100 using the mountedload 2200, thesemiconductor chip 2000 is bent. The deflection W2 of thesemiconductor chip 2000 is a maximum distance between one surface of thesemiconductor chip 2000 not being applied with the predetermined pressure and the one surface of thebent semiconductor chip 200 being applied with the predetermined pressured. Theload 2200 may include a surface having a predetermined radius of curvature. The surface having the predetermined radius of curvature is in contact with thesemiconductor chip 2000. - In the present experiment, the semiconductor chips used in experimental examples 1 to 4 and comparative examples 1 and 2 had the same widths as each other and had different thicknesses from each other. The thicknesses of the semiconductor chips used in the experimental examples 1 to 4 and the comparative examples 1 and 2 are shown in the following table 1. The semiconductor chips used in the experimental examples 1 to 4 were the semiconductor chips used in the semiconductor modules according to an exemplary embodiment of the inventive concept. The experimental examples 1 to 4 show the physical characteristics of the semiconductor chips used in the semiconductor modules according to an exemplary embodiment of the inventive concept.
-
TABLE 1 Experimental Experimental Experimental Experimental Comparative Comparative example 1 example 2 example 3 example 4 example 1 example 2 Thickness Less than 150 μm 200 μm 250 μm 300 μm 400 μm 100 μm - The stress-resistance of the semiconductor chips of the experimental examples 1 to 4 and the comparative examples 1 and 2 were tested. In the present experiment, the distance W1 between the pair of supporting
portions 2100 was about 10 mm. And theload 2200 including the surface having a radius of curvature of no greater than about 3 mm was used in the present experiment. A pressure with a speed of about 1 mm/minute was applied to the semiconductor chips using the load. - When the semiconductor chips of the experimental examples 1 to 4 and the comparative examples 1 and 2 were broken, forces F of the applied pressures were measured. The stress-resistances of the semiconductor chips were calculated by the following formula using the measured forces F. The calculated stress-resistances were illustrated in
FIG. 5B . -
S (stress-resistance)=3F×W 1/2L×d 2 [Formula] - Wherein F is the force (N) at break of the semiconductor chip, W1 is the distance (about 10 mm) between the pair of supporting
portions 2100, L is the width (mm) of the semiconductor chip, and d is the thickness (mm) of the semiconductor chip. - Referring to
FIG. 5B , the semiconductor chips of the experimental examples 1 to 4 have stress-resistance values greater than about 350 Mpa. Alternatively, the semiconductor chips of the comparative examples 1 and 2 have stress-resistance values less than about 350 Mpa. With embodiments of the inventive concept, when the semiconductor chip is bonded directly to the flexible panel, a predetermined stress may be applied to the bonded semiconductor chip by bending phenomenon of the flexible panel. When the bonded semiconductor chip has the stress-resistance value less than about 350 Mpa, the semiconductor chip may be broken due to the stress applied by the bending phenomenon of the flexible panel. Thus, the semiconductor chip bonded directly to the flexible panel has a stress-resistance value of no less than about 350 Mpa. That is, thesemiconductor chip 100 a in the semiconductor module according to an embodiment of the inventive concept may have a stress-resistance value of no less than about 350 Mpa. For example, thesemiconductor chip 100 a in the semiconductor module according to an embodiment of the inventive concept may have a stress-resistance value of no less than about 550 Mpa. - Also, deflection values of the semiconductor chips of the experimental examples 1 to 4 and the comparative examples 1 and 2 were measured just before the semiconductor chips are broken. The measured deflection values were illustrated in
FIG. 5C . - Referring to
FIG. 5C , the deflection values W2 of the semiconductor chips of the experimental examples 1 to 4 are greater than about 0.15 mm. Alternatively, the deflection values W2 of the semiconductor chips of the comparative examples 1 and 2 are less than about 0.15 mm. In an embodiment of the inventive concept, when the semiconductor chip is bonded directly to the flexible panel, the bonded semiconductor chip can be bent by the bending phenomenon of the flexible panel. In this case, if the deflection value of the bonded semiconductor chip is small, the semiconductor chip may be broken by the bending phenomenon of the flexible panel. Thus, the deflection value W2 of thesemiconductor chip 100 in the semiconductor module according to an embodiment of the inventive concept may be no less than about 0.15 mm. For example, the deflection value W2 of thesemiconductor chip 100 in the semiconductor module according to an embodiment of the inventive concept may be no less than about 0.4 mm. - A semiconductor module according to an exemplary embodiment of the inventive concept may be applied to various electronic apparatus. A display apparatus including the semiconductor module according to an exemplary embodiment of the inventive concept will be described with reference to
FIGS. 6 and 7 , hereinafter.FIG. 6 is an exploded perspective view of adisplay apparatus 1000 including a semiconductor module according to an exemplary embodiment of inventive concept, andFIG. 7 is a partial enlarged cross sectional view illustrating the inside of a flexible panel included in thedisplay apparatus 1000 ofFIG. 6 . - Referring to
FIGS. 6 and 7 , thedisplay apparatus 1000 may include, for example, adisplay unit 300 and acontainer unit 500. In an embodiment, thedisplay unit 300 may be, for example, one of the semiconductor modules according to an exemplary embodiment of the inventive concept. - The
display unit 300 may include, for example, theflexible panel 10 and thesemiconductor chip 100 a. Theflexible panel 10 may include, for example, a display region and a peripheral region. The display region may display an image corresponding to an inputted electrical signal, and the peripheral region may be disposed on a periphery of the display region. The display region of theflexible panel 10 may include, for example, a plurality of pixels arranged in a matrix shape. As illustrated inFIG. 7 , each of the pixels may include, for example, an organic electro luminescent device L, a thin film transistor T, and a storage capacitor C1. The thin film transistor T may include, for example, agate electrode 13, asource electrode 14, and adrain electrode 15. Also, the organic electro luminescent device L may include, for example, ananode electrode 16, an organiclight emitting layer 17, and acathode electrode 18. Theanode electrode 16 of the organic electro luminescent device L may be connected to thedrain electrode 15 of the thin film transistor T. - The storage capacitor C1 may be connected to the thin film transistor T to provide an output current in proportion to the square of a difference between a stored voltage in the storage capacitor C1 and a threshold voltage to the organic electro luminescent device L. The organic electro luminescent device L may emit light by the output current.
- The
semiconductor chip 100 a may be mounted on the peripheral region of theflexible panel 10. In an embodiment, thesemiconductor chip 100 a may provide a drive signal to the pixels in the display region of theflexible panel 10. In an embodiment, thesemiconductor chip 100 a may have, for example, better flexibility than that of a silicon substrate being three times thicker than thesemiconductor chip 100 a. In an embodiment, the stress-resistance value of thesemiconductor chip 100 a may be, for example, no less than about 350 Mpa. Also, in an embodiment, the deflection value of thesemiconductor chip 100 a may be, for example, no less than about 1.5 mm. For example, a thickness of thesemiconductor chip 100 a may have a range of, for example, about 30 μm to about 50 μm. - As illustrated in
FIGS. 4A and 4B , thedisplay unit 300 may further include, for example, a highpolymer material pattern 210 a disposed on thesemiconductor chip 100 a. The highpolymer material pattern 210 a may protect thesemiconductor chip 100 a to minimize damage to thesemiconductor chip 100 a which may be caused by an external force and/or permeation of an external material. - The
container unit 500 of thedisplay apparatus 1000 may include, for example, atop chassis 510, amold frame 520, and abottom chassis 530. Themold frame 520 may contain thedisplay unit 300 within the first containing space S1 of themold frame 520. Themold frame 520 may include, for example, a bottom surface, and a side surface being extended from an edge of the bottom surface for formation of the first containing space S1. Themold frame 520 may be made of, for example, a synthetic resin material. - The
mold frame 520 may be contained in the second containing space S2 of thebottom chassis 530. Thebottom chassis 530 is made of, for example, a metal material. Thebottom chassis 530 may include, for example, a bottom plate, and a side plate being extended from an edge of the bottom plate for formation of the second containing space S2. Thetop chassis 510 may fix themold frame 520 and thedisplay unit 300 housed within the first containing space S1 of themold frame 520 within the second containing space S2 of thebottom chassis 530. - The
semiconductor chip 100 a may be, for example, directly mounted on the peripheral region of theflexible panel 10 in thedisplay unit 300 of thedisplay apparatus 1000 described above. Thus, another structure for connection of thesemiconductor chip 100 a and theflexible panel 10 may be omitted. As a result, a semiconductor module optimized for being small in size and/or lightweight may be realized. Also, damage to thesemiconductor chip 100 a which may be caused by an external force and/or permeation of an external material may be minimized due to the highpolymer material pattern 210 a. Thus, adisplay apparatus 1000 with increased reliability may be realized. - According to an exemplary embodiment of the inventive concept, the semiconductor chip may be adhered to the support substrate, and then the adhered semiconductor chip may be bonded to the flexible panel. Thus, the semiconductor chip may be bonded to the flexible panel in a state in which damage to the semiconductor chip can be minimized. As a result, a semiconductor chip with increased reliability may be realized.
- Also, the semiconductor chip may be bonded directly to the flexible panel. Thus, a semiconductor module optimized for being small in size and/or lightweight may be realized, and/or a semiconductor module may be formed with low manufacturing costs.
- Having described exemplary embodiments of the inventive concept, it is further noted that it is readily apparent to those of reasonable skill in the art that various modifications may be made without departing from the spirit and scope of the invention which is defined by the metes and bounds of the appended claims.
Claims (10)
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